CN213775664U

CN213775664U - Single-tube rotary peristaltic pump

Info

Publication number: CN213775664U
Application number: CN202022097800.3U
Authority: CN
Inventors: 阳波; 刘振; 陶海军; 施俊; 陈智隆
Original assignee: Hunan Zhixian Technology Co ltd
Current assignee: Hunan Zhixian Technology Co ltd; Hunan Zenithsun Technology Co Ltd
Priority date: 2020-09-22
Filing date: 2020-09-22
Publication date: 2021-07-23
Anticipated expiration: 2030-09-22

Abstract

The utility model discloses a single tube rotation type peristaltic pump, include: the device comprises a pump body assembly, a rotating assembly, an elastic hose, a closure assembly and at least two groups of roller assemblies; the intercepting component is used for clamping and loosening the elastic hose; the roller assembly and the rotating assembly are both arranged on the pump body assembly; the elastic hose is arranged on the rotating assembly, and rotates along with the rotation of the rotating assembly; the roller assembly is arranged on the outer side of the rotating assembly and extrudes the rotating elastic hose to finish pumping and metering of materials. The utility model discloses a single tube rotation type peristaltic pump has advantages such as simple structure, elastic hose long service life, measurement accuracy are stable.

Description

Single-tube rotary peristaltic pump

Technical Field

The utility model mainly relates to a fluid filling pump technical field especially relates to a single tube rotation type peristaltic pump.

Background

Currently, multi-position mechanical filling pumps used in the field of fluid filling include plunger pumps, peristaltic pumps, syringe pumps, and the like. Among them, the peristaltic pump has the advantages of no pollution and good precision, and is widely applied to various industries, including chemical industry, pharmaceutical industry, food filling industry and the like. In order to meet the high requirements of fluid filling on the aspects of precision, stability and the like, a pump pipe needs to be continuously extruded through the roller in the operation process of the peristaltic pump, the roller extrudes the hose and rotates just like the hose is extruded by clamping two fingers, a positive pressure cavity and a negative pressure cavity are formed in the hose, and liquid flows along with the positive pressure cavity and the negative pressure cavity and is discharged. In the process that the roller continuously extrudes the hose, the pipeline is seriously deformed and abraded, so that the service life of the hose is short; and the hose deforms, so that the precision stability of the peristaltic pump is difficult to meet the production requirement. In addition, because the hose is not completely fixed and positioned in the pump body, the roller wheel easily drives the hose to move in a staggered manner when rotating, and precision errors are generated. The precision stability of the peristaltic pump is not high all the time due to the problems, and the application range of the peristaltic pump is limited to a certain extent.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome the not enough of prior art, provide a simple structure, elastic hose long service life, the stable single tube rotation type peristaltic pump of measurement precision.

In order to solve the technical problem, the utility model discloses a following technical scheme:

a single tube rotary peristaltic pump comprising: the pump body assembly, the rotating assembly, the elastic hose and at least two groups of roller assemblies; the intercepting component is used for clamping and loosening the elastic hose; the roller assembly and the rotating assembly are both arranged on the pump body assembly; the elastic hose is arranged on the rotating assembly, and rotates along with the rotation of the rotating assembly; the roller assembly is arranged on the outer side of the rotating assembly and extrudes the rotating elastic hose to finish pumping and metering of materials.

As a further improvement of the utility model, the rotating assembly includes the roating seat, the roating seat outside is equipped with the hose mounting groove, elastic hose sets up in the hose mounting groove.

As a further improvement of the present invention, the rotating assembly further comprises a first power motor; the rotating seat is connected with the output end of the first power motor and is driven by the first power motor to rotate.

As a further improvement of the utility model, the roller components comprise a fixed roller and a movable roller which are oppositely arranged; the fixed roller is fixedly arranged on the outer side of the rotating seat, and the movable roller is arranged on the opposite side of the fixed roller through an eccentric shaft; the elastic hose passes between the fixed roller and the movable roller.

As a further improvement of the utility model, the roller components comprise fixed rollers and movable rollers; the fixed rollers are fixedly arranged on the outer side of the rotating seat, and the movable rollers are arranged between the two groups of fixed rollers through eccentric shafts; elastic hoses, fixed rollers and rotating assemblies are symmetrically arranged on two sides of the movable roller; through the cooperation between a set of movable gyro wheel and two sets of fixed gyro wheels, two sets of rotating assembly, realize the intermittent type formula extrusion of two sets of elastic hose.

As a further improvement of the utility model, the fixed rollers are cylindrical fixed rollers, and the movable rollers are cylindrical movable rollers; the arrangement directions of the cylindrical fixed idler wheels and the cylindrical movable idler wheels are parallel to the arrangement direction of the rotary seat.

As a further improvement of the utility model, the fixed rollers are conical fixed rollers, and the movable rollers are conical movable rollers; the arrangement directions of the conical fixed idler wheels and the conical movable idler wheels are perpendicular to the arrangement direction of the rotary seat.

As a further improvement of the utility model, the utility model also comprises a second power motor; the eccentric shaft is connected with the output end of the second power motor and is driven by the second power motor to rotate so as to drive the movable roller to be close to or far away from the fixed roller.

As a further improvement, the pump body assembly comprises a mounting seat, and first power motor, second power motor and fixed roller are all installed on the mounting seat.

Compared with the prior art, the utility model has the advantages of:

1. the single-tube rotary peristaltic pump of the utility model is characterized in that the roller components and the rotating components are both arranged on the pump body component; the elastic hose is arranged on the rotating assembly and rotates along with the rotation of the rotating assembly; the roller assembly is arranged on the outer side of the rotating assembly, and has the advantages of compact structure and simple principle. When the device works, the roller assemblies extrude the rotating elastic hose to finish pumping and metering of materials. Pipe the transmission with the gyro wheel and compare, the utility model discloses take gyro wheel relatively fixed, and hose rotary motion's filling mode has avoided the gyro wheel to drive the hose dislocation removal easily when rotatory, and the cooperation of subassembly dams in addition has effectively improved the precision stability of peristaltic pump.

2. The single-tube rotary peristaltic pump has the advantages that the elastic hose is arranged on the hose mounting groove outside the rotary seat, the assembly and disassembly are convenient, and the pressure tube pumping process is completely visualized; when filling is carried out to different kinds of materials or the filling quantity needs to be changed, only the elastic hose needs to be replaced, and cross contamination among different materials is avoided.

3. The utility model discloses a single tube rotation type peristaltic pump is equipped with flexible hose, fixed roller and rotating assembly through the equal symmetry in the both sides of activity gyro wheel, utilizes the cooperation between a set of activity gyro wheel and two sets of fixed roller, two sets of rotating assembly, has realized the continuation of the same kind of material and has carried or the intermittent type nature transport of two kinds of different materials, has improved the work efficiency of peristaltic pump greatly.

Drawings

Fig. 1 is a schematic view of the structural principle of a single-tube rotary peristaltic pump in embodiment 1 of the present invention.

Fig. 2 is an installation schematic diagram of the elastic hose passing through the front end of the rotary seat in embodiment 1 of the present invention.

Fig. 3 is an installation schematic diagram of the elastic hose passing through the rear end of the rotary seat in embodiment 1 of the present invention.

Fig. 4 is a schematic view of the structural principle of a single-tube rotary peristaltic pump in embodiment 2 of the present invention.

Fig. 5 is a schematic view of the installation of the elastic hose in embodiment 2 of the present invention.

Fig. 6 is a schematic view of the structural principle of a single-tube rotary peristaltic pump in embodiment 3 of the present invention.

Fig. 7 is an installation schematic diagram of the elastic hose passing through the front end of the rotary seat in embodiment 3 of the present invention.

Fig. 8 is an installation schematic diagram of the elastic hose passing through the rear end of the rotary seat in embodiment 3 of the present invention.

Illustration of the drawings:

1. a first power motor; 2. a mounting seat; 3. a rotating base; 31. a hose mounting groove; 4. an elastic hose; 5. a cylindrical fixed roller; 6. a second power motor; 7. an eccentric shaft; 8. a cylindrical movable roller; 9. and (4) bolts.

Detailed Description

The invention will be further described with reference to the drawings and specific preferred embodiments without limiting the scope of the invention.

Example 1

As shown in fig. 1 to 3, the present invention provides a single-tube rotary peristaltic pump, comprising: the pump body assembly, the rotating assembly, the elastic hose 4 and at least two groups of roller assemblies; the intercepting component is used for clamping and loosening the elastic hose 4; the roller assembly and the rotating assembly are both arranged on the pump body assembly; the elastic hose 4 is arranged on the rotating assembly, and the elastic hose 4 rotates along with the rotation of the rotating assembly; the roller assembly is installed in the rotating assembly outside, thereby the roller assembly extrudes the elasticity hose 4 of rotation and accomplishes the pump sending of material and measures.

In this embodiment, all install wheel components and rotating assembly on pump body subassembly, install flexible hose 4 on rotating assembly, and flexible hose 4 rotates along with rotating assembly's rotation, and wheel components installs in the rotating assembly outside, has compact structure, the simple advantage of principle. When the device works, the roller component extrudes the rotating elastic hose 4 to finish pumping and metering of materials. Pipe transmission is pressed with current gyro wheel and is compared, the utility model discloses take gyro wheel relatively fixed, and hose rotary motion's filling mode has avoided the gyro wheel to drive the hose dislocation removal easily when rotatory, and the cooperation of subassembly that dams has in addition effectively improved the precision stability of peristaltic pump.

It should be noted that, in this embodiment, one end of the elastic hose 4 extends out of the pump body assembly for inputting the material, and the other end of the elastic hose 4 passes through the pump body assembly for outputting the material; the roller assembly presses the rotating elastic hose 4, so that the material is sucked into the hose from one end of the elastic hose 4 and then flows out from the other end of the elastic hose 4. The port of the elastic hose 4 extending out of or passing through the pump body assembly is correspondingly provided with a closure assembly (not shown in the figure), and the closure assembly is matched with the elastic hose 4 to prevent the backflow of the materials, so that the precise conveying of the materials is realized. It will be understood that the shut-off assembly can be embodied as a one-way valve or a pinch valve or a solenoid valve, or as an on-off valve, but is not limited to an on-off valve and the above-mentioned valve group, according to the actual requirements.

As shown in fig. 1, in the present embodiment, the rotating assembly includes a rotating base 3, a hose installation groove 31 is formed outside the rotating base 3, and the elastic hose 4 is disposed in the hose installation groove 31. Further, the rotating assembly also comprises a first power motor 1; the rotary base 3 is connected with the output end of the first power motor 1 and is driven by the first power motor 1 to rotate.

In this embodiment, install on the hose mounting groove 31 in the roating seat 3 outside through with elastic hose 4, have easy dismounting, press the pipe pumping process advantage visual completely. When filling is carried out to different kinds of materials or the filling quantity needs to be changed, only the elastic hose 4 needs to be replaced, and the cross contamination among different materials is avoided. The rotary base 3 can be connected with the output end of the first power motor 1 through a bolt 9. The rotary base 3 is driven by the first power motor 1 to rotate forward and backward in a reciprocating manner. It will be appreciated that in other embodiments, the power source of the rotating assembly may be other mechanisms with power take-off functionality.

In this embodiment, the roller assembly includes a fixed roller and a movable roller which are oppositely disposed; the fixed roller is fixedly arranged on the outer side of the rotating seat 3, and the movable roller is arranged on the opposite side of the fixed roller through an eccentric shaft 7; the flexible hose 4 runs between the fixed roller and the movable roller. Further, as shown in fig. 1, the fixed roller is a cylindrical fixed roller 5, and the movable roller is a cylindrical movable roller 8; the arrangement directions of the cylindrical fixed roller 5 and the cylindrical movable roller 8 are parallel to the arrangement direction of the rotary base 3. As shown in fig. 2 and 3, the elastic hose 4 is wound around the outside of the rotary base 3, and at the same time, the elastic hose 4 is wound around the side of the cylindrical fixed roller 5 to pass between the cylindrical fixed roller 5 and the cylindrical movable roller 8. In addition, the inlet end and the outlet end of the flexible hose 4 in fig. 2 are installed through the front end of the rotary base 3, and the inlet end and the outlet end of the flexible hose 4 in fig. 3 are installed through the rear end of the rotary base 3, so that the input and the output of materials are realized. It can be understood that, in this embodiment, the elastic hose 4 is wound on the outer side of the rotary seat 3, and the working state of the elastic hose 4 is controlled by the cylindrical fixed roller 5 and the cylindrical movable roller 8, so that the elastic hose 4 is in a completely exposed state without a fixed cover plate in the whole machine, and the whole machine has the advantages of sanitation, cleanness and convenience for replacing components.

The single-tube rotary peristaltic pump of the embodiment further comprises a second power motor 6; the eccentric shaft 7 is connected with the output end of the second power motor 6 and is driven by the second power motor 6 to rotate so as to drive the movable roller to be close to or far away from the fixed roller. Specifically, under the driving of the second power motor 6, the eccentric shaft 7 drives the cylindrical movable roller 8 to approach or depart from the cylindrical fixed roller 5, so as to extrude or loosen the elastic hose 4.

As shown in fig. 1, in the present embodiment, the pump body assembly includes a mounting base 2, and a first power motor 1, a second power motor 6 and a cylindrical fixed roller 5 are all mounted on the mounting base 2.

In operation, first, under the driving of the second power motor 6, the cylindrical movable roller 8 approaches the cylindrical fixed roller 5 to squeeze the elastic hose 4. Under the extrusion of cylindrical fixed roller 5 and cylindrical movable roller 8, the inner wall of elastic hose 4 is laminated completely to the tight action point of roller components to elastic hose 4 is the boundary, and the inner cavity of elastic hose 4 is divided into two completely independent cavities. Subsequently, under the drive of first power motor 1, roating seat 3 carries out the forward rotation, and elastic hose 4 is along with the roating seat forward rotation together, and the space size of two independent cavitys also changes thereupon in elastic hose 4 to form positive, negative pressure chamber. The space of the inner cavity of the elastic hose 4 extruded by the roller component is reduced, the pressure of the fluid in the tube cavity is increased, and the material in the positive pressure cavity is discharged from the outlet end of the elastic hose 4, so that the material conveying is realized. After the elastic hose 4 continuously rotates along with the rotating seat 3 and passes through a clamping action point of the roller assembly on the elastic hose 4, the elastic hose 4 enables the space in the pipe cavity to be increased by means of self elastic recovery to form negative pressure, and materials are sucked into the pipe cavity. When the rotary seat 3 rotates forward for a certain angle or reaches a preset filling amount, the interception component positioned at the outlet end of the elastic hose clamps the elastic hose 4 to prevent the material from flowing back; the second power motor 6 drives the cylindrical movable roller 8 to be far away from the cylindrical fixed roller 5 so as to loosen the elastic hose 4; the first power motor 1 drives the rotating base 3 to rotate reversely; the flexible hose 4 rotates reversely with the rotary base 3 to the initial position, and waits for the next metering pumping operation. The material can be intermittently conveyed by the reciprocating circulation.

Example 2

As shown in fig. 4 and 5, the single-tube rotary peristaltic pump of the present invention has substantially the same structure and operation principle as the single-tube rotary peristaltic pump of embodiment 1, and the difference is: the fixed roller is a conical fixed roller 9, and the movable roller is a conical movable roller 10; the arrangement direction of the conical fixed roller 9 and the conical movable roller 10 is perpendicular to the arrangement direction of the rotary base 3.

In this embodiment, the pipe is pressed by the tapered fixed roller 9 and the tapered movable roller 10, and the arrangement direction of the tapered fixed roller 9 and the tapered movable roller 10 is perpendicular to the arrangement direction of the rotary base 3. The linear velocity difference between the contact surfaces of the roller components and the elastic hose 4 is effectively reduced, the friction loss of the roller components to the elastic hose 4 is reduced, the service life of the elastic hose 4 is prolonged, and the running cost of the single-tube rotary peristaltic pump is reduced.

Example 3

As shown in fig. 6 to 8, the structure and the working principle of the single-tube rotary peristaltic pump of the present invention are substantially the same as those of the single-tube rotary peristaltic pump in embodiment 1, and the difference is that: the roller assembly comprises a fixed roller and a movable roller; the fixed rollers are fixedly arranged on the outer side of the rotating seat 3, and the movable rollers are arranged between the two groups of fixed rollers through eccentric shafts 7; the two sides of the movable roller are symmetrically provided with an elastic hose 4, a fixed roller and a rotating assembly, the inlet end and the outlet end of the elastic hose 4 in fig. 7 are installed by penetrating through the front end of the rotating seat 3, and the inlet end and the outlet end of the elastic hose 4 in fig. 8 are installed by penetrating through the rear end of the rotating seat 3; through the cooperation between a set of movable gyro wheel and two sets of fixed gyro wheels, two sets of rotating assembly, realize the intermittent type formula extrusion of two sets of elastic hose 4. Further, the fixed roller is a cylindrical fixed roller 5, and the movable roller is a cylindrical movable roller 8; the arrangement directions of the cylindrical fixed roller 5 and the cylindrical movable roller 8 are parallel to the arrangement direction of the rotary base 3.

During operation, at first, under the drive of second power motor 6, cylindrical movable roller 8 is close to cylindrical fixed roller 5 of one side to extrude corresponding elastic hose 4, under the extrusion of cylindrical fixed roller 5 and cylindrical movable roller 8, the inner wall of elastic hose 4 is laminated completely, and with the tight action point of the clamping of roller components to elastic hose 4 as the boundary, the inner chamber of elastic hose 4 is divided into two completely independent cavities. Subsequently, under the drive of first power motor 1, roating seat 3 carries out the forward rotation, and elastic hose 4 is along with the roating seat forward rotation together, and the space size in two independent chambeies in elastic hose 4 also changes thereupon to form positive, negative pressure chamber. The space of the inner cavity of the elastic hose 4 extruded by the roller component is reduced, the pressure of the fluid in the tube cavity is increased, and the material in the positive pressure cavity is discharged from the outlet end of the elastic hose 4, so that the material conveying is realized. After the elastic hose 4 continuously rotates along with the rotating seat 3 and passes through a clamping action point of the roller assembly on the elastic hose 4, the elastic hose 4 enables the space in the pipe cavity to be increased by means of self elastic recovery to form negative pressure, and materials are sucked into the pipe cavity. When the rotary seat 3 rotates forward for a certain angle or reaches a preset filling amount, the interception component positioned at the outlet end of the elastic hose clamps the elastic hose 4 to prevent the material from flowing back; the second power motor 6 drives the cylindrical movable roller 8 to be far away from the cylindrical fixed roller 5 so as to loosen the elastic hose 4; the first power motor 1 drives the rotating base 3 to rotate reversely; the flexible hose 4 rotates reversely with the rotary base 3 to the initial position, and waits for the next metering pumping operation. In the working process, when the cylindrical movable roller 8 approaches to the cylindrical fixed roller 5 on one side, namely the cylindrical fixed roller 5 on the other side is far away, the elastic hoses 4 on the two sides of the cylindrical movable roller 8 are respectively in opposite working states, and the single-pipe rotary peristaltic pump has the suction and discharge of materials at the same time. According to the filling demand of reality, can link to each other two sets of elastic hose 4 through three way connection, realized the continuation of material promptly and carried, improved the work efficiency of peristaltic pump greatly.

Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention. Those skilled in the art can make numerous changes and modifications to the disclosed embodiments, or modify equivalent embodiments, without departing from the spirit and scope of the invention, using the methods and techniques disclosed above. Therefore, any simple modification, equivalent replacement, equivalent change and modification made to the above embodiments by the technical entity of the present invention all still belong to the protection scope of the technical solution of the present invention.

Claims

1. A single tube rotary peristaltic pump, comprising: the device comprises a pump body assembly, a rotating assembly, an elastic hose (4), an intercepting assembly and at least two groups of roller assemblies; the intercepting component is used for clamping and loosening the elastic hose (4); the roller assembly and the rotating assembly are both arranged on the pump body assembly; the elastic hose (4) is arranged on the rotating assembly, and the elastic hose (4) rotates along with the rotation of the rotating assembly; the roller assembly is arranged on the outer side of the rotating assembly and extrudes the rotating elastic hose (4) to finish pumping and metering of materials.

2. The single-tube rotary peristaltic pump according to claim 1, wherein said rotating assembly comprises a rotating seat (3), said rotating seat (3) being provided, on the outside, with a hose mounting groove (31), said elastic hose (4) being disposed inside said hose mounting groove (31).

3. The mono-tube rotary peristaltic pump according to claim 2, wherein said rotating assembly further comprises a first power motor (1); the rotating base (3) is connected with the output end of the first power motor (1) and is driven by the first power motor (1) to rotate.

4. The single tube rotary peristaltic pump of claim 3, wherein the roller assembly comprises a fixed roller and a movable roller disposed in opposition; the fixed roller is fixedly arranged on the outer side of the rotating seat (3), and the movable roller is arranged on the opposite side of the fixed roller through an eccentric shaft (7); the elastic hose (4) passes between the fixed roller and the movable roller.

5. The single tube rotary peristaltic pump of claim 3, wherein the roller assembly comprises a fixed roller and a movable roller; the fixed rollers are fixedly arranged on the outer side of the rotating seat (3), and the movable rollers are arranged between the two groups of fixed rollers through eccentric shafts (7); elastic hoses (4), fixed rollers and rotating assemblies are symmetrically arranged on two sides of the movable roller; the intermittent extrusion of the two groups of elastic hoses (4) is realized through the matching of the group of movable rollers, the two groups of fixed rollers and the two groups of rotating assemblies.

6. The single tube rotary peristaltic pump according to claim 4, wherein said fixed roller is a cylindrical fixed roller (5) and said movable roller is a cylindrical movable roller (8); the arrangement directions of the cylindrical fixed roller (5) and the cylindrical movable roller (8) are parallel to the arrangement direction of the rotary seat (3).

7. The single tube rotary peristaltic pump of claim 4, wherein: the fixed roller is a conical fixed roller (9), and the movable roller is a conical movable roller (10); the arrangement directions of the conical fixed roller (9) and the conical movable roller (10) are mutually vertical to the arrangement direction of the rotary seat (3).

8. The single tube rotary peristaltic pump according to claim 5, wherein said fixed roller is a cylindrical fixed roller (5) and said movable roller is a cylindrical movable roller (8); the arrangement directions of the cylindrical fixed roller (5) and the cylindrical movable roller (8) are parallel to the arrangement direction of the rotary seat (3).

9. The mono-tube rotary peristaltic pump according to any one of claims 6 to 8, further comprising a second power motor (6); the eccentric shaft (7) is connected with the output end of the second power motor (6) and is driven by the second power motor (6) to rotate so as to drive the movable roller to be close to or far away from the fixed roller.

10. The single-tube rotary peristaltic pump according to claim 9, characterized in that said pump body assembly comprises a mounting seat (2), said first motor (1), second motor (6) and fixed rollers being mounted on said mounting seat (2).